An injured truck-driver in critical condition was airlifted to Liverpool Hospital yesterday afternoon after he ran into a tree near Dubbo. Police are investigating the circumstances of the crash. Shortly before noon yesterday, an unloaded B-double truck was being driven north on the Newell Highway about 25 kms south of Dubbo. The truck left the highway, crossing the southbound lanes, travelled through scrub on the side of the road and hit a tree. The truck was extensively damaged in the crash and the injured driver was trapped in his vehicle. A member of the public helped him until emergency services arrived. The driver was released from the cab and treated at the scene before being airlifted 400 kms to Liverpool Hospital in a critical condition. Officers from Orana mid-western police district attended and began inquiries into the cause of the crash.